Learning how to improvise is confusing for most. The sheer number of choices becomes a burden. Should I play this note? What chord next? Where do I go from here? All valid questions newbies (and oldbies) at improvisation sometimes ask themselves.
The number one reason people have problems creating in the moment is that they won't let up on themselves and just play. They knew how to do it once as children but now that memory is gone and with it, a void has taken its place.